<template>
  <div class="home-box">
    <el-container class="home-container">
      <!-- 顶部栏 -->
      <el-header>
        <div>
          <img class="logo-img" src="../assets/heima.png" alt="" />
          <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出登录</el-button>
      </el-header>
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '64px' : '200px'">
          <!-- 折叠按钮 -->
          <div class="toggle-button" @click="toggleCollapse">|||</div>
          <!-- 侧边栏菜单区 -->
          <el-menu
            background-color="#464a57"
            text-color="#fff"
            active-text-color="#ffd04b"
            :unique-opened="true"
            :collapse="isCollapse"
            :collapse-transition="false"
            :default-active="activePath"
            router
          ><!-- 为整个侧边栏开启路由vue-router模式 -->
            <!-- 一级菜单 -->
            <el-submenu
              :index="item.id + ''"
              v-for="item in menulist"
              :key="item.id"
            >
              <template slot="title">
                <!-- 图标 -->
                <i :class="iconsObj[item.id]"></i>
                <!-- 文本 -->
                <span>{{ item.authName }}</span>
              </template>

              <!-- 二级菜单 -->
              <el-menu-item
                :index="'/' + subItem.path"
                v-for="subItem in item.children"
                :key="subItem.id"
                @click="saveNavSlale('/' + subItem.path)"
                
                
              >
                <template slot="title">
                  <i class="el-icon-menu"></i>
                  <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-aside>
        <!-- 右侧内容体 -->
        <el-main>
          <!-- 路由占位符 -->
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
  </div>
</template>


<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao',
      },
      // 是否折叠
      isCollapse:false,
      //被激活的链接地址
      activePath:'',
    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      // 清空 token
      window.sessionStorage.clear();
      // 跳转到登录页
      this.$router.push("/login");
    },

    // 获取所有菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }
      this.menulist = res.data;
      // console.log(res.data);
    },

    // 点击按钮，切换菜单的折叠和展开
    toggleCollapse(){
      this.isCollapse = !this.isCollapse
    },

    //保存链接的激活状态
    saveNavSlale(activePath){
      window.sessionStorage.setItem('activePath',activePath)
    }
  },
};

</script>


<style scoped>
.home-box{
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}
.el-header {
  background-color: #464e53;
  color: #fff;
  font-size: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo-img {
  background-color: #464e53;
}
.el-header div {
  display: flex;
  align-items: center;
}

.el-aside {
  background-color: #464a57;
  color: #333;
  text-align: center;
  
}
.el-aside .el-menu{
    border-right: none;
  }

.el-main {
  background-color: #e9eef3;
  color: #333;
  
}
.home-container {
  height: 100%;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #686c77;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em; /* 间隔 */
  cursor: pointer; /* 鼠标放上变成小手 */
}
.el-menu-item{
  font-size: 12px;
}
</style>